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arXiv · 2502.01361

LearningMatch: Siamese Neural Network Learns the Match Manifold

Susanna Green·Andrew Lundgren·Xan Morice-Atkinson
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Abstract

The match, which is defined as the the similarity between two waveform templates, is a fundamental calculation in computationally expensive gravitational-wave data-analysis pipelines, such as template bank generation. In this paper we introduce LearningMatch, a Siamese neural network that has learned the mapping between the parameters, specifically $\lambda_{0}$ (which is proportional to the chirp mass), $\eta$ (symmetric mass ratio), and equal aligned spin ($\chi_{1}$ = $\chi_{2}$), of two gravitational-wave templates and the match. The trained Siamese neural network, called LearningMatch, can predict the match to within $3.3\%$ of the actual match value. For match values greater than 0.95, a trained LearningMatch model can predict the match to within $1\%$ of the actual match value. LearningMatch can predict the match in 20 $\mu$s (mean maximum value) with Graphical Processing Units (GPUs). LearningMatch is 3 orders of magnitudes faster at determining the match than current standard mathematical calculations that involve the template being generated.

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Susanna Green, Andrew Lundgren, Xan Morice-Atkinson. 2025-02-03. LearningMatch: Siamese Neural Network Learns the Match Manifold. https://arxiv.org/abs/2502.01361

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